./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6374d8695c81504f4ccfc7ac3dabef115b6d49d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 03:06:05,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 03:06:05,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 03:06:05,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 03:06:05,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 03:06:05,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 03:06:05,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 03:06:05,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 03:06:05,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 03:06:05,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 03:06:05,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 03:06:05,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 03:06:05,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 03:06:05,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 03:06:05,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 03:06:05,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 03:06:05,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 03:06:05,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 03:06:05,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 03:06:05,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 03:06:05,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 03:06:05,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 03:06:05,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 03:06:05,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 03:06:05,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 03:06:05,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 03:06:05,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 03:06:05,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 03:06:05,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 03:06:05,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 03:06:05,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 03:06:05,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 03:06:05,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 03:06:05,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 03:06:05,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 03:06:05,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 03:06:05,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 03:06:05,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 03:06:05,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 03:06:05,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 03:06:05,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 03:06:05,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 03:06:05,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 03:06:05,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 03:06:05,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 03:06:05,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 03:06:05,352 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 03:06:05,352 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 03:06:05,353 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 03:06:05,353 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 03:06:05,353 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 03:06:05,353 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 03:06:05,355 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 03:06:05,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 03:06:05,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 03:06:05,356 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 03:06:05,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 03:06:05,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 03:06:05,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 03:06:05,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 03:06:05,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 03:06:05,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 03:06:05,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 03:06:05,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 03:06:05,358 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 03:06:05,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 03:06:05,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 03:06:05,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 03:06:05,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 03:06:05,360 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 03:06:05,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 03:06:05,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 03:06:05,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 03:06:05,362 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 03:06:05,364 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 03:06:05,365 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6374d8695c81504f4ccfc7ac3dabef115b6d49d [2020-07-29 03:06:05,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 03:06:05,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 03:06:05,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 03:06:05,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 03:06:05,710 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 03:06:05,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2020-07-29 03:06:05,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63a3de17/092891f5a0474407821b0fd18b90bd06/FLAG44add6718 [2020-07-29 03:06:06,258 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 03:06:06,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2020-07-29 03:06:06,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63a3de17/092891f5a0474407821b0fd18b90bd06/FLAG44add6718 [2020-07-29 03:06:06,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63a3de17/092891f5a0474407821b0fd18b90bd06 [2020-07-29 03:06:06,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 03:06:06,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 03:06:06,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 03:06:06,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 03:06:06,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 03:06:06,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6893368d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06, skipping insertion in model container [2020-07-29 03:06:06,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 03:06:06,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 03:06:06,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 03:06:06,859 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 03:06:06,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 03:06:06,889 INFO L208 MainTranslator]: Completed translation [2020-07-29 03:06:06,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06 WrapperNode [2020-07-29 03:06:06,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 03:06:06,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 03:06:06,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 03:06:06,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 03:06:06,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 03:06:06,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 03:06:06,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 03:06:06,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 03:06:06,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... [2020-07-29 03:06:06,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 03:06:06,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 03:06:06,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 03:06:06,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 03:06:06,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-29 03:06:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-29 03:06:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 03:06:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 03:06:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2020-07-29 03:06:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2020-07-29 03:06:07,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 03:06:07,284 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 03:06:07,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 03:06:07 BoogieIcfgContainer [2020-07-29 03:06:07,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 03:06:07,302 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 03:06:07,302 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 03:06:07,313 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 03:06:07,315 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 03:06:07,315 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 03:06:06" (1/3) ... [2020-07-29 03:06:07,319 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6146c82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 03:06:07, skipping insertion in model container [2020-07-29 03:06:07,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 03:06:07,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 03:06:06" (2/3) ... [2020-07-29 03:06:07,323 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6146c82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 03:06:07, skipping insertion in model container [2020-07-29 03:06:07,324 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 03:06:07,324 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 03:06:07" (3/3) ... [2020-07-29 03:06:07,329 INFO L371 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-2.c [2020-07-29 03:06:07,399 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 03:06:07,399 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 03:06:07,399 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 03:06:07,399 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 03:06:07,399 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 03:06:07,400 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 03:06:07,400 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 03:06:07,400 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 03:06:07,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-07-29 03:06:07,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-29 03:06:07,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 03:06:07,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 03:06:07,449 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 03:06:07,450 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-07-29 03:06:07,450 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 03:06:07,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-07-29 03:06:07,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-29 03:06:07,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 03:06:07,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 03:06:07,455 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 03:06:07,455 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-07-29 03:06:07,462 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res; 12#L21true call f(2);< 17#fENTRYtrue [2020-07-29 03:06:07,463 INFO L796 eck$LassoCheckResult]: Loop: 17#fENTRYtrue ~n := #in~n; 9#L7true assume !(~n < 3);#t~post2 := ~n;~n := #t~post2 - 1;havoc #t~post2; 3#L9true call f2(~n);< 7#f2ENTRYtrue ~n := #in~n; 16#L14true assume !(~n < 3);#t~post3 := ~n;~n := #t~post3 - 1;havoc #t~post3; 11#L16true call f(~n);< 17#fENTRYtrue [2020-07-29 03:06:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 03:06:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1297, now seen corresponding path program 1 times [2020-07-29 03:06:07,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 03:06:07,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036642299] [2020-07-29 03:06:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 03:06:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 03:06:07,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 03:06:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 03:06:07,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 03:06:07,562 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 03:06:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 03:06:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash 891927781, now seen corresponding path program 1 times [2020-07-29 03:06:07,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 03:06:07,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820232858] [2020-07-29 03:06:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 03:06:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 03:06:07,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 03:06:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 03:06:07,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 03:06:07,599 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 03:06:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 03:06:07,601 INFO L82 PathProgramCache]: Analyzing trace with hash 45463029, now seen corresponding path program 1 times [2020-07-29 03:06:07,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 03:06:07,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128134023] [2020-07-29 03:06:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 03:06:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 03:06:07,692 INFO L280 TraceCheckUtils]: 0: Hoare triple {25#true} havoc main_#res; {25#true} is VALID [2020-07-29 03:06:07,694 INFO L263 TraceCheckUtils]: 1: Hoare triple {25#true} call f(2); {27#(<= |f_#in~n| 2)} is VALID [2020-07-29 03:06:07,696 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#(<= |f_#in~n| 2)} ~n := #in~n; {28#(<= f_~n 2)} is VALID [2020-07-29 03:06:07,697 INFO L280 TraceCheckUtils]: 3: Hoare triple {28#(<= f_~n 2)} assume !(~n < 3);#t~post2 := ~n;~n := #t~post2 - 1;havoc #t~post2; {26#false} is VALID [2020-07-29 03:06:07,697 INFO L263 TraceCheckUtils]: 4: Hoare triple {26#false} call f2(~n); {26#false} is VALID [2020-07-29 03:06:07,698 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#false} ~n := #in~n; {26#false} is VALID [2020-07-29 03:06:07,698 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#false} assume !(~n < 3);#t~post3 := ~n;~n := #t~post3 - 1;havoc #t~post3; {26#false} is VALID [2020-07-29 03:06:07,699 INFO L263 TraceCheckUtils]: 7: Hoare triple {26#false} call f(~n); {26#false} is VALID [2020-07-29 03:06:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 03:06:07,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128134023] [2020-07-29 03:06:07,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 03:06:07,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 03:06:07,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908416533] [2020-07-29 03:06:07,924 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 03:06:07,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 03:06:07,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 03:06:07,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 03:06:07,926 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 03:06:07,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:07,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 03:06:07,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 03:06:07,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2020-07-29 03:06:07,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 03:06:07,928 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 03:06:07,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:07,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:07,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:07,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:07,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,167 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 03:06:08,169 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 03:06:08,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 03:06:08,178 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:08,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 03:06:08,189 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2_#in~n=0} Honda state: {f2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 03:06:08,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 03:06:08,235 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:08,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 03:06:08,239 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2_#t~post3=0} Honda state: {f2_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 03:06:08,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 03:06:08,281 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 03:06:08,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 03:06:08,325 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:08,409 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 03:06:08,411 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 03:06:08,412 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 03:06:08,412 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 03:06:08,412 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 03:06:08,412 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 03:06:08,412 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:08,413 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 03:06:08,413 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 03:06:08,413 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2020-07-29 03:06:08,413 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 03:06:08,413 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 03:06:08,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 03:06:08,577 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 03:06:08,583 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 03:06:08,593 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:08,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 03:06:08,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 03:06:08,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 03:06:08,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 03:06:08,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 03:06:08,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 03:06:08,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 03:06:08,603 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 03:06:08,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 03:06:08,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 03:06:08,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 03:06:08,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 03:06:08,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 03:06:08,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 03:06:08,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 03:06:08,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:08,650 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 03:06:08,675 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-29 03:06:08,676 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 03:06:08,692 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 03:06:08,692 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 03:06:08,692 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 03:06:08,693 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2020-07-29 03:06:08,721 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 03:06:08,726 INFO L393 LassoCheck]: Loop: "~n := #in~n;" "assume !(~n < 3);#t~post2 := ~n;~n := #t~post2 - 1;havoc #t~post2;" "call f2(~n);"< "~n := #in~n;" "assume !(~n < 3);#t~post3 := ~n;~n := #t~post3 - 1;havoc #t~post3;" "call f(~n);"< [2020-07-29 03:06:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 03:06:08,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 03:06:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 03:06:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 03:06:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 03:06:08,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 03:06:08,790 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#unseeded} havoc main_#res; {29#unseeded} is VALID [2020-07-29 03:06:08,791 INFO L263 TraceCheckUtils]: 1: Hoare triple {29#unseeded} call f(2); {29#unseeded} is VALID [2020-07-29 03:06:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 03:06:08,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-29 03:06:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 03:06:08,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 03:06:09,192 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(>= oldRank0 |f_#in~n|)} ~n := #in~n; {50#(<= f_~n oldRank0)} is VALID [2020-07-29 03:06:09,195 INFO L280 TraceCheckUtils]: 1: Hoare triple {50#(<= f_~n oldRank0)} assume !(~n < 3);#t~post2 := ~n;~n := #t~post2 - 1;havoc #t~post2; {54#(<= (+ f_~n 1) oldRank0)} is VALID [2020-07-29 03:06:09,196 INFO L263 TraceCheckUtils]: 2: Hoare triple {54#(<= (+ f_~n 1) oldRank0)} call f2(~n); {58#(<= (+ |f2_#in~n| 1) oldRank0)} is VALID [2020-07-29 03:06:09,197 INFO L280 TraceCheckUtils]: 3: Hoare triple {58#(<= (+ |f2_#in~n| 1) oldRank0)} ~n := #in~n; {62#(<= (+ f2_~n 1) oldRank0)} is VALID [2020-07-29 03:06:09,199 INFO L280 TraceCheckUtils]: 4: Hoare triple {62#(<= (+ f2_~n 1) oldRank0)} assume !(~n < 3);#t~post3 := ~n;~n := #t~post3 - 1;havoc #t~post3; {66#(and (<= (+ f2_~n 2) oldRank0) (<= 4 oldRank0))} is VALID [2020-07-29 03:06:09,201 INFO L263 TraceCheckUtils]: 5: Hoare triple {66#(and (<= (+ f2_~n 2) oldRank0) (<= 4 oldRank0))} call f(~n); {42#(or (and (> oldRank0 |f_#in~n|) (>= oldRank0 0)) unseeded)} is VALID [2020-07-29 03:06:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 03:06:09,212 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-29 03:06:09,237 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 03:06:09,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,249 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2020-07-29 03:06:09,251 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 7 states. [2020-07-29 03:06:09,692 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 7 states. Result 55 states and 61 transitions. Complement of second has 26 states. [2020-07-29 03:06:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-07-29 03:06:09,693 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 03:06:09,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-07-29 03:06:09,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-29 03:06:09,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 03:06:09,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 03:06:09,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-07-29 03:06:09,704 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-07-29 03:06:09,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 03:06:09,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 03:06:09,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 61 transitions. [2020-07-29 03:06:09,708 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 03:06:09,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 03:06:09,711 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 17 states. [2020-07-29 03:06:09,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-29 03:06:09,716 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 6 examples of accepted words. [2020-07-29 03:06:09,716 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 7 states. [2020-07-29 03:06:09,719 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-07-29 03:06:09,721 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 2 examples of accepted words. [2020-07-29 03:06:09,722 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 55 states and 61 transitions. cyclomatic complexity: 7 [2020-07-29 03:06:09,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 61 transitions. cyclomatic complexity: 7 [2020-07-29 03:06:09,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 03:06:09,722 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 0 examples of accepted words. [2020-07-29 03:06:09,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 1 letters. Loop has 6 letters. [2020-07-29 03:06:09,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 1 letters. Loop has 6 letters. [2020-07-29 03:06:09,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 1 letters. Loop has 6 letters. [2020-07-29 03:06:09,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 55 letters. Loop has 55 letters. [2020-07-29 03:06:09,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 55 letters. Loop has 55 letters. [2020-07-29 03:06:09,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 55 letters. Loop has 55 letters. [2020-07-29 03:06:09,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 17 letters. Loop has 17 letters. [2020-07-29 03:06:09,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 17 letters. Loop has 17 letters. [2020-07-29 03:06:09,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 17 letters. Loop has 17 letters. [2020-07-29 03:06:09,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 9 letters. Loop has 9 letters. [2020-07-29 03:06:09,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 9 letters. Loop has 9 letters. [2020-07-29 03:06:09,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 9 letters. Loop has 9 letters. [2020-07-29 03:06:09,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 6 letters. Loop has 6 letters. [2020-07-29 03:06:09,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 6 letters. Loop has 6 letters. [2020-07-29 03:06:09,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 6 letters. Loop has 6 letters. [2020-07-29 03:06:09,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 4 letters. Loop has 6 letters. [2020-07-29 03:06:09,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 4 letters. Loop has 6 letters. [2020-07-29 03:06:09,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 6 letters. [2020-07-29 03:06:09,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 5 letters. Loop has 6 letters. [2020-07-29 03:06:09,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 5 letters. Loop has 6 letters. [2020-07-29 03:06:09,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 5 letters. Loop has 6 letters. [2020-07-29 03:06:09,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 3 letters. Loop has 6 letters. [2020-07-29 03:06:09,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 3 letters. Loop has 6 letters. [2020-07-29 03:06:09,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 3 letters. Loop has 6 letters. [2020-07-29 03:06:09,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 7 letters. Loop has 6 letters. [2020-07-29 03:06:09,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 7 letters. Loop has 6 letters. [2020-07-29 03:06:09,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 7 letters. Loop has 6 letters. [2020-07-29 03:06:09,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 16 letters. Loop has 1 letters. [2020-07-29 03:06:09,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 16 letters. Loop has 1 letters. [2020-07-29 03:06:09,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 16 letters. Loop has 1 letters. [2020-07-29 03:06:09,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states. Stem has 1 letters. Loop has 6 letters. [2020-07-29 03:06:09,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states. Stem has 1 letters. Loop has 6 letters. [2020-07-29 03:06:09,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 55 states and 61 transitions. cyclomatic complexity: 7 Stem has 1 letters. Loop has 6 letters. [2020-07-29 03:06:09,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,748 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 03:06:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-29 03:06:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2020-07-29 03:06:09,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-29 03:06:09,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 8 letters. Loop has 6 letters. [2020-07-29 03:06:09,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 2 letters. Loop has 12 letters. [2020-07-29 03:06:09,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 03:06:09,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 61 transitions. cyclomatic complexity: 7 [2020-07-29 03:06:09,766 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 03:06:09,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 0 states and 0 transitions. [2020-07-29 03:06:09,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 03:06:09,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 03:06:09,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 03:06:09,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 03:06:09,773 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 03:06:09,773 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 03:06:09,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 03:06:09,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 03:06:09,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 03:06:09,779 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-07-29 03:06:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 03:06:09,783 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-29 03:06:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-29 03:06:09,783 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 03:06:09,798 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 03:06:09,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-29 03:06:09,799 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 03:06:09,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-29 03:06:09,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 03:06:09,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 03:06:09,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 03:06:09,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 03:06:09,800 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 03:06:09,801 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 03:06:09,801 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 03:06:09,801 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 03:06:09,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 03:06:09,801 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 03:06:09,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 03:06:09,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 03:06:09 BoogieIcfgContainer [2020-07-29 03:06:09,809 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 03:06:09,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 03:06:09,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 03:06:09,810 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 03:06:09,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 03:06:07" (3/4) ... [2020-07-29 03:06:09,815 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 03:06:09,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 03:06:09,819 INFO L168 Benchmark]: Toolchain (without parser) took 3201.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 960.2 MB in the beginning and 791.6 MB in the end (delta: 168.6 MB). Peak memory consumption was 253.0 MB. Max. memory is 11.5 GB. [2020-07-29 03:06:09,820 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 03:06:09,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.59 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 03:06:09,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 03:06:09,822 INFO L168 Benchmark]: Boogie Preprocessor took 73.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -130.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-29 03:06:09,824 INFO L168 Benchmark]: RCFGBuilder took 307.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2020-07-29 03:06:09,825 INFO L168 Benchmark]: BuchiAutomizer took 2507.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 791.6 MB in the end (delta: 262.4 MB). Peak memory consumption was 262.4 MB. Max. memory is 11.5 GB. [2020-07-29 03:06:09,825 INFO L168 Benchmark]: Witness Printer took 6.02 ms. Allocated memory is still 1.1 GB. Free memory is still 791.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 03:06:09,830 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.59 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -130.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 307.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2507.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 791.6 MB in the end (delta: 262.4 MB). Peak memory consumption was 262.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.02 ms. Allocated memory is still 1.1 GB. Free memory is still 791.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 9 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 11 SDslu, 9 SDs, 0 SdLazy, 56 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf90 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...